M6 with HD595's

it drives my ksc75's without ant distortion at all, but i listen to it on 40/40 when in a noisy area and fell it's still a bit low. at work, i use about 15/40 as to not bother anyone else around me.

I am thinking about purchasing one of these, but i am concerned about its power output and hiss. I have a UE 5 super fi and sennheiser hd595. Could anyone give me some input on the hiss with the UE 5's or the ability to power the HD595's?

It drives HD595's fine, but it hisses with my E500's. I use the line attenuator to get rid of the hiss, though it's still there when I listen at louder volumes. While I had a XP amp with the LM6172 opamp configuration (gain of 5), there was zero hiss until I turned the amp to full volume with the music paused. But then again, I couldn't listen any louder than 11 on the amp, so turning it to 5 was never going to happen.

I bought an 8GB unit off of eBay from Hong Kong (poly_treasure). With shipping, I paid just over $170US. It took about 2 weeks to get here, no problems. The player sounds awesome with my UM1s. My hard drive players are an H120 and 5G Ipod (with RSA Tomahawk) - they provide a good point of reference. The sound is full and balanced. The player doesn't sound good with my PX100s and doesn't have the power to drive my SR80s. It also sounds like crap with my Senn CX300s.

The touch pad is very sensitive and requires a bit of focus to work with. The menu system is a close clone of the IPod; although, you can browse by ID tags or folders. What I don't like about the IPod firmware, and the M6 firmware, is how you have to back out to the top level menu to return to the 'Now Playing' screen.

The player operates in MSC and MTP modes. It supports M3U playlists, which can be made on the player (just like playlists can be made on IPods).

I may have been a little harsh about the CX300s, but in comparison to the UM1s they do sound like crap. The player has a 10 band equalizer plus separate bass and treble boost settings. With the UM1s, I have a flat EQ across the board with a medium amount of bass and treble boost - heaven.

With the CX300s, the bass is bloated and the mids are recessed. I crank the bass boast down and tweak with the 10 band EQ. I can reach a decent sound, but the sound is not nearly as full/alive as with the UM1s. The sound is very linear with the CX300s (no soundstage effect). The opposite is true with the UM1s. I understand that these are different classes of IEMs.